Based on the final book in James Dashner’s Maze Runner YA trilogy, The Death Cure is set to conclude the stories of the teenagers populating the franchise’s futuristic dystopian world, including Thomas (Dylan O’Brien), Newt (Thomas Brodie-Sangster), Teresa (Kaya Scodelario), and Minho (Ki Hong Lee). However, production has been put on hold as one of the stars recuperates from an injury sustained on set.

Deadline is reporting O’Brien was injured while on set of The Maze Runner: The Death Cure in Vancouver, BC and sent to a local hospital. Though Deadline reports the actor “fractured either his cheekbone or orbital socket” after falling off a set piece, official details of O’Brien’s injury have not been released by 20th Century Fox or the actor’s publicist. Fox did release this statement:

Dylan O’Brien was injured yesterday while filming ‘Maze Runner: The Death Cure’ in Vancouver, Canada. He was immediately transferred to a local hospital for observation and treatment. Production on the film will be shut down while he recovers. Our thoughts go out to Dylan for a full and speedy recovery.

Additionally, Dashner commented about the situation on Twitter, confirming O’Brien’s injuries weren’t life threatening and that the production was put on hold:

I just want to let everyone know that yes, Dylan was hurt, but that he’s going to be okay. Not life threatening in any way. Production is postponed but certainly not cancelled. All that matters now is that Dylan recovers. We love you, Dylan!!!

While both films were able to be released on their scheduled dates, it’s difficult to say whether The Death Cure will be able to meet production deadlines without more information about O’Brien’s injuries or how long the actor will need to recover. Depending on those factors, it remains to be seen whether The Death Cure will debut on its February 2017 release date.